drm/i915/pps: Extract pps_units_to_msecs()

Add pps_units_to_msecs() as the counterpart to msecs_pps_units_to().

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241106215859.25446-8-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c
index 5be2903c6aaf6b546b4bca4f0e032e74c01efbc5..378a525eec1630c43e87502b04015f9fd4e375e8 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_pps.c
+++ b/drivers/gpu/drm/i915/display/intel_pps.c
@@ -1468,6 +1468,12 @@ static int msecs_to_pps_units(int msecs)
        return msecs * 10;
 }
 
+static int pps_units_to_msecs(int val)
+{
+       /* PPS uses 100us units */
+       return DIV_ROUND_UP(val, 10);
+}
+
 static void pps_init_delays_bios(struct intel_dp *intel_dp,
                                 struct intel_pps_delays *bios)
 {
@@ -1554,7 +1560,7 @@ static void pps_init_delays(struct intel_dp *intel_dp)
        assign_final(power_cycle);
 #undef assign_final
 
-#define get_delay(field)       (DIV_ROUND_UP(final->field, 10))
+#define get_delay(field)       pps_units_to_msecs(final->field)
        intel_dp->pps.panel_power_up_delay = get_delay(power_up);
        intel_dp->pps.backlight_on_delay = get_delay(backlight_on);
        intel_dp->pps.backlight_off_delay = get_delay(backlight_off);